Patents by Inventor Gaolin Wang

Gaolin Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10637458
    Abstract: The present disclosure provides a series-connected SiC MOSFET drive circuit based on multi-winding transformer coupling. The drive circuit is mainly composed of a transformer, an energy storage capacitor and a push-pull circuit. The transformer plays a role of constraining a relationship between gate-source voltages of series-connected SiC MOSFETs to ensure that a drive voltage of each SiC MOSET in series is synchronously increased and decreased, and to prevent the problem of a dynamic voltage imbalance at moments of conduction and cutoff due to the desynchrony of the drive voltages. Both the energy storage capacitor and the push-pull structure are used to ensure that the SiC MOSFETs have sufficient drive currents at the moment of conduction to achieve fast conduction of the SiC MOSFETs. Meanwhile, a discharge loop is constructed for the gate-source voltages at the moment of cutoff to ensure that the drive voltages drop in a short period of time.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: April 28, 2020
    Assignee: HARBIN INSTITUTE OF TECHNOLOGY
    Inventors: Wei Wang, Panbao Wang, Gaolin Wang, Guihua Liu, Sibao Ding, Yijie Wang, Dianguo Xu